LY341495
Based on 14 publication(s) in Google Scholar
LY341495 is a metabotropic glutamate receptor (mGluR) antagonist with IC50s of 21 nM, 14 nM, 7.8 μM, 8.2 μM, 170 nM, 990 nM, 22 μM for mGlu2, mGlu3, mGlu1a, mGlu5a, mGlu8, mGlu7, and mGlu4 receptors, respectively.
For research use only. We do not sell to patients.
- Purity: 99.17%
- CAS No.: 201943-63-7
- Formula: C20H19NO5
- Molecular Weight:353.37
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Storage:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 2 years , -20°C, 1 year
Publications Citing Use of MedChemExpress (MCE) LY341495
More- Nature. 2024 Jul;631(8022):826-834. [Abstract]
- Cell Res. 2025 Mar;35(3):165-185. [Abstract]
- Cell Res. 2023 Oct;33(10):762-774. [Abstract]
- Sci China Life Sci. 2025 Feb;68(2):502-514. [Abstract]
- Neuropsychopharmacology. 2025 Oct;50(11):1643-1654. [Abstract]
- Pain. 2016 Aug;157(8):1711-23. [Abstract]
- Front Pharmacol. 2020 Feb 28;11:183. [Abstract]
- Neuropharmacology. 2020 Oct 15;177:108231. [Abstract]
- Neuropharmacology. 2018 May 1:133:354-365. [Abstract]
- Phytopathol Res. (2019) 1:12.
- University of Maryland. 2025.
- bioRxiv. 2024 November 03.
- biorxiv. 2024 May 26.
- Aquaculture and Fisheries. 2023 Aug 19.
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WB
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In Vivo Efficacy Study
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In Vivo Efficacy Study
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IHC
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WB
Biological Activity
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mGluR1a 7.8 μM (IC50) |
mGluR2 21 nM (IC50) |
mGluR3 14 nM (IC50) |
mGluR4 22 μM (IC50) |
mGluR5a 8.2 μM (IC50) |
mGluR7 990 nM (IC50) |
mGluR8 170 nM (IC50) |
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Cell Line
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Type | Value | Description | References |
|---|---|---|---|---|
| CHO | IC50 |
0.2 μM
Compound: 7
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Antagonistic activity against stimulation of GTP (gamma) 35 S binding by glutamate in membranes from CHO cells expressing human mGluR2
Antagonistic activity against stimulation of GTP (gamma) 35 S binding by glutamate in membranes from CHO cells expressing human mGluR2
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[PMID: 11720869] |
| CHO | EC50 |
>100000 nM
Compound: 9
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Effective concentration for agonistic activity towards metabotropic glutamate receptor 2 of rat expressed in CHO cells
Effective concentration for agonistic activity towards metabotropic glutamate receptor 2 of rat expressed in CHO cells
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[PMID: 15317467] |
| CHO | EC50 |
>100000 nM
Compound: 9
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Effective concentration for agonistic activity towards metabotropic glutamate receptor 3 of rat expressed in CHO cells
Effective concentration for agonistic activity towards metabotropic glutamate receptor 3 of rat expressed in CHO cells
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[PMID: 15317467] |
| CHO | EC50 |
>100000 nM
Compound: 9
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Effective concentration for agonistic activity towards metabotropic glutamate receptor 5 of rat expressed in CHO cells
Effective concentration for agonistic activity towards metabotropic glutamate receptor 5 of rat expressed in CHO cells
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[PMID: 15317467] |
| CHO | EC50 |
>100000 nM
Compound: 9
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Effective concentration for agonistic activity towards metabotropic glutamate receptor 6 of rat expressed in CHO cells
Effective concentration for agonistic activity towards metabotropic glutamate receptor 6 of rat expressed in CHO cells
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[PMID: 15317467] |
| CHO | IC50 |
1140 nM
Compound: 9
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Concentration required to inhibit metabotropic glutamate receptor 6 activity of rat expressed in CHO cells
Concentration required to inhibit metabotropic glutamate receptor 6 activity of rat expressed in CHO cells
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[PMID: 15317467] |
| CHO | IC50 |
11400 nM
Compound: 9
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Concentration required to inhibit metabotropic glutamate receptor 5 activity of rat expressed in CHO cells
Concentration required to inhibit metabotropic glutamate receptor 5 activity of rat expressed in CHO cells
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[PMID: 15317467] |
| CHO | IC50 |
14.2 nM
Compound: 9
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Concentration required to inhibit metabotropic glutamate receptor 3 activity of rat expressed in CHO cells
Concentration required to inhibit metabotropic glutamate receptor 3 activity of rat expressed in CHO cells
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[PMID: 15317467] |
| CHO | IC50 |
23.2 nM
Compound: 9
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Concentration required to inhibit metabotropic glutamate receptor 2 activity of rat expressed in CHO cells
Concentration required to inhibit metabotropic glutamate receptor 2 activity of rat expressed in CHO cells
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[PMID: 15317467] |
| CHO | IC50 |
2650 nM
Compound: 9
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Concentration required to inhibit metabotropic glutamate receptor 4 activity of rat expressed in CHO cells
Concentration required to inhibit metabotropic glutamate receptor 4 activity of rat expressed in CHO cells
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[PMID: 15317467] |
| CHO | IC50 |
8990 nM
Compound: 9
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Concentration required to inhibit metabotropic glutamate receptor 1 activity of rat expressed in CHO cells
Concentration required to inhibit metabotropic glutamate receptor 1 activity of rat expressed in CHO cells
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[PMID: 15317467] |
| CHO | EC50 |
>100000 nM
Compound: 9
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Effective concentration for agonistic activity towards metabotropic glutamate receptor 1 of rat expressed in CHO cells
Effective concentration for agonistic activity towards metabotropic glutamate receptor 1 of rat expressed in CHO cells
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[PMID: 15317467] |
| CHO | IC50 |
2.9 nM
Compound: 1, LY-341495
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Displacement of [3H]-MGS0008 from mGluR2 expressed in CHO cells
Displacement of [3H]-MGS0008 from mGluR2 expressed in CHO cells
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[PMID: 18348906] |
| HEK293 | IC50 |
0.016 μM
Compound: 7
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Compound was evaluated for the inhibition of binding of [3H]glutamate against rat recombinant mGluR3 receptors expressed in HEK293 cells
Compound was evaluated for the inhibition of binding of [3H]glutamate against rat recombinant mGluR3 receptors expressed in HEK293 cells
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[PMID: 11720869] |
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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CAS No. 201943-63-7
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Appearance Solid
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Molecular Weight 353.37
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Formula C20H19NO5
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Color White to off-white
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SMILES
O=C(O)[C@@H]1[C@H](C1)[C@@](N)(CC2C3=C(C=CC=C3)OC4=C2C=CC=C4)C(O)=O
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Powder -20°C 3 years 4°C 2 years In solvent -80°C 2 years -20°C 1 year
Publications (14)
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Journal Impact Factor
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Most Recent
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Nature
2024 Jul;631(8022):826-834. PMID: 38987597 -
Cell Res
2025 Mar;35(3):165-185. PMID: 39875551
LY341495 purchased from MedChemExpress. Usage Cited in: Cell Res. 2025 Mar;35(3):165-185. [Abstract]
Representative western blot and quantification of AKT signal in GT1-7 cells treated with 10 ng/ml Raptin and GRM3 agonists (LY354740, LY2794193, LY379268), inhibitors (LY341495) or allosteric agents (VU0650786).
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Cell Res
Structural insights into dimerization and activation of the mGlu2-mGlu3 and mGlu2-mGlu4 heterodimers. [Abstract]2023 Oct;33(10):762-774. PMID: 37286794 -
Sci China Life Sci
Human iPSC-derived mesenchymal stem cells relieve high blood pressure in spontaneously hypertensive rats via splenic nerve activated choline acetyltransferase-positive cells. [Abstract]2025 Feb;68(2):502-514. PMID: 39428428 -
Neuropsychopharmacology
2025 Oct;50(11):1643-1654. PMID: 40281038 -
Pain
2016 Aug;157(8):1711-23. PMID: 27075430
LY341495 purchased from MedChemExpress. Usage Cited in: Pain. 2016 Aug;157(8):1711-23. [Abstract]
LY341495 and Sulfasalazine mildly suppress the effects of chronic constrictive injury (CCI)-induced mechanical allodynia and matrix metalloproteinase-9 activity by N-acetyl-cysteine (NAC).
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Front Pharmacol
LY354740 Reduces Extracellular Glutamate Concentration, Inhibits Phosphorylation of Fyn/NMDARs, and Expression of PLK2/pS129 α-Synuclein in Mice Treated With Acute or Sub-Acute MPTP. [Abstract]2020 Feb 28;11:183. PMID: 32180729
LY341495 purchased from MedChemExpress. Usage Cited in: Front Pharmacol. 2020 Feb 28;11:183. [Abstract]
LY341495 (1 mg/kg; IP; 30 min prior to MPTP injection (30 mg/kg/d) once a day for 7 days consecutively) significantly decreased compared with the normal + saline group and a significant longer time-down (TLA) was spent by the MPTP + saline group and MPTP + LY341495 group compared with the normal + saline group (both p < 0.01) and LY354740 + saline group (both p < 0.05).
LY341495 purchased from MedChemExpress. Usage Cited in: Front Pharmacol. 2020 Feb 28;11:183. [Abstract]
LY341495 (1 mg/kg; IP; for four times (30 min before each MPTP injection); once a day for 6 days consecutively) showed that latency times in acute MPTP-mice treated with LY341495 (1 mg/kg) significantly decreased, both MPTP + saline group and MPTP + LY341495 group exhibited longer times (Turn) than normal + saline group and MPTP + LY354740 (4 mg/kg) group.
LY341495 purchased from MedChemExpress. Usage Cited in: Front Pharmacol. 2020 Feb 28;11:183. [Abstract]
(A, B) Immunohistochemical images and corresponding TH positive cell counts in SN from each group.LY341495 (1 mg/kg; IP; 30 min prior to MPTP injection (30 mg/kg/d) once a day for 7 days consecutively) counted fewer TH-positive cells in sub-acute MPTP-mice treated.
LY341495 purchased from MedChemExpress. Usage Cited in: Front Pharmacol. 2020 Feb 28;11:183. [Abstract]
LY341495 (1 mg/kg; IP; 30 min prior to MPTP injection (30 mg/kg/d) once a day for 7 days consecutively) exhibited much higher expressions of p-Fyn Tyr416.
LY341495 purchased from MedChemExpress. Usage Cited in: Front Pharmacol. 2020 Feb 28;11:183. [Abstract]
LY341495 (1 mg/kg; IP; 30 min prior to MPTP injection (30 mg/kg/d) once a day for 7 days consecutively) showed an elevation of the number of PLK2 positive cells, indicating increased expression of PLK2. Immunofluorescence of PLK2 positive cell counts in SN.
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Neuropharmacology
The metabotropic glutamate receptor 2/3 antagonist LY341495 improves working memory in adult mice following juvenile social isolation. [Abstract]2020 Oct 15;177:108231. PMID: 32693006 -
Neuropharmacology
The role of 19S proteasome associated deubiquitinases in activity-dependent hippocampal synaptic plasticity. [Abstract]2018 May 1:133:354-365. PMID: 29407217 -
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Solvent & Solubility
DMSO : 6 mg/mL (16.98 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
Select the appropriate dissolution method based on your experimental animal and administration route.
- For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
- To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for In Vivo experiments, it is recommended to prepare freshly and use it on the same day.
- The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.
Please enter the basic information of animal experiments:
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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
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%DMSO +
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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%+
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+%Tween-80 + +
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%Saline +
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Working solution concentration: 0.22 mg/mL
Method for preparing stock solution: mg drug dissolved in μL DMSO. Stock solution concentration: mg/mL.
1. Take μL DMSO stock solution;
2. Add μL .
μL , mix evenly;
3. Then add μL Tween 80, mix evenly;
4. Then add μL
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Protocol
The rats are randomLy divided into six experimental groups (10 rats per group): vehicle and 0.05, 0.1, 0.3, 1, and 3 mg/kg LY341495. The LY341495 doses are selected on the basis of results from previous Published studies that evaluated the effects of this compound on cognition. The rats are subjected to a training session that consisted of two 2-min trials. The animals receive either vehicle or LY341495 immediately after T1. Using the 2-min trial duration, an ITI of 1 h is used because recognition memory is still intact in untreated control rats under these experimental conditions
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Purity & Documentation
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Data Sheet (281 KB)
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SDS (393 KB)
- English - EN (393 KB)
- Français - FR (393 KB)
- Deutsch - DE (393 KB)
- Norwegian - NO (393 KB)
- Español - ES (393 KB)
- Swedish - SV (393 KB)
- Italian - IT (393 KB)
- Portuguese - PT (393 KB)
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Handling Instructions (2659 KB)
References
[1]. Pitsikas N, et al. The metabotropic glutamate 2/3 receptor antagonist LY341495 differentially affects recognition memory in rats. Behav Brain Res. 2012 May 1;230(2):374-9. [Content Brief]
[2]. Sutton LP, et al. Regulation of Akt and Wnt signaling by the group II metabotropic glutamate receptor antagonist LY341495 and agonist LY379268.J Neurochem. 2011 Jun;117(6):973-83. [Content Brief]
[3]. Linden AM, et al. Use of MGLUR2 and MGLUR3 knockout mice to explore in vivo receptor specificity of the MGLUR2/3 selective antagonist LY341495. Neuropharmacology. 2009 Aug;57(2):172-82. Epub 2009 May 27. [Content Brief]
[4]. Li J, et al. N-acetyl-cysteine attenuates neuropathic pain by suppressing matrix metalloproteinases. Pain. 2016 Aug;157(8):1711-23. [Content Brief]
[5]. A E Kingston, et al. LY341495 Is a Nanomolar Potent and Selective Antagonist of Group II Metabotropic Glutamate Receptors.Neuropharmacology. 1998;37(1):1-12. [Content Brief]
Complete Stock Solution Preparation Table
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
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| DMSO | 1 mM | 2.8299 mL | 14.1495 mL | 28.2990 mL | 70.7474 mL |
| 5 mM | 0.5660 mL | 2.8299 mL | 5.6598 mL | 14.1495 mL | |
| 10 mM | 0.2830 mL | 1.4149 mL | 2.8299 mL | 7.0747 mL | |
| 15 mM | 0.1887 mL | 0.9433 mL | 1.8866 mL | 4.7165 mL |